9. shot (n.) a consecutive series of pictures that constitutes a unit of action in a film
The vacuum level is determined by the pressure differential between the evacuated volume and the surrounding atmosphere. Several units of measure can be used. Most refer to the height of a column of mercury â usually inches of mercury (in.-Hg) or millimeters of mercury (mm-Hg).
This will determine the size of the grinder and vacuum needed, as well as how much tooling will be required. For example, a LAVINA 20 (20 inch) is appropriate for small residential projects, like garages or patios, whereas larger commercial projects will require a larger, more powerful machine such as LAVINA 30 or 32.